Hoisting mechanism



Patented Dec. 3'1, 1929 UNITED STATES PATENT OFFICE CHARLES :F.VOSGOOD,0F CLARENIYQNT, NEW HAMPSHIRE, ASSIG-NOR TO SULLIVAN IIA CHINEBYCOMPANY, A CORPORATION -OF MASSACHUSETTS HOISTING MECHANISIII.

Application mea my 1, 1924. sum1 11o. 710,324.

.This invention relates to hoisting mechanisms.

It has'for its object to provide an improved hoisting mechanism.Afurther object is to provide improved control means therefor.

- Another .object is to provide an improved doubledrum hoist withimproved means for alternatively connectin the drums to a driving motor.Another o ject is to provide in 'combination with a drum and drivingmotor therefor, improved means for connecting the drum in drivingrelation to the driving motor,

which means constitutes manually operable means adapted tosimultaneously control both 15 elements.

In the accompanying drawings I have yshown for purposes of illustrationthree forms which my invention may assume. in practice.

Fig. 1 is a side elevation partly broken away to show details ofconstruction.

Fig. 2 is an end elevation partly broken away to show details ofconstruction.

Fig. 3 is a sectional view. of the control valve. L

Fig. 4 is a modified form of control valve.

Fig. 5 is an end elevation of a modified form of hoisting mechanism.

In the illustrative embodiments of my invention, I have shown the sameapplied to a double drum hoist, although it will be obvious that thesame is applicable to a single drum hoist also. More s1 ,cifically, thesame-comprises a base 1 having standards 2 'and 3 projecting upwardlyfrom the opposite ends thereof, and a central stationary motor 4disposed between the drums 5 and 6 which are rotatably supported by themotor casing and standards. This form of hoisting mechanism is wellknown, and further details, briey described, comprises a frictionallycontrolled internal gear 7 adapted to be held or allowed to freelyrotate in a bearing 8 mounted within the standard 3. Inasmuch as thestructure for each drum is identical, description of one end willsuffice for "both, The dear 7 is held by a friction band 9 controlled ya suitable mechanism hereinafter dew scribed, and when the same is soheld, power will flow from the motor throu h suitable reduction gearing10 to drive the rum. The gearing 10 is carried by a head 11 formed onthe outer end of the drum, this head having a stub shaft 12 alsorotatably mounted within the hub of gear 7. y,

l Improved automatic means are herein' provided for controlling theoperationof the friction bands so that the same is dependent upon theoperation of the motor. This means comprises a cylinder 13 disposedwithin the frame 1 and transversely of the drum axis. A piston 14reciprocably mounted therein has a piston rod 15 connected as by a pinand slot connection to a bell crank 16 pivotally mounted on an arm 17carried at the forward side of the frame 1. The ends of the frictionband -9 are connected tothe bell crank-as at 18 and 1 9 and so arrangedthat when the piston 14 is forced outwardly, the friction band9 willhold the internal gear 7, thereby acting asa cluteh mechanism forcontrolling rotation of the drum. A cylinder is provided for each of theinternal gears 7,l but it will of course be understood that if desired,one cylinder and piston could be used for controlling the same inasmuchas they are alternatively operated.

In the preferred formV of my invention, I have shown an air type motor,the actuatingl fluid foi1 which is controlled by a valve 20 having aninlet 22 and outlet 21, the latter provided with suitable piping todeliver such actuating Huid to the motor. Communication between thepipes 21 and 22 is hadL by way of a peripheral passage 23 formed in thevalve part 24 rotatably mounted within a bore 25. In vthep'osition ofthe valve shown in Fig. 3, the passage 23 will also alld'w How of Huidthrough a pipe 26, while a second pipe 27 diametrically opposed theretois vented to the atmosphere by a passage 28. In order to obtain thedependent operation between the motor and theY respective drums, thepipes 26 Vand 27 will be connected to the cylinders k13 forcontrolling-the friction bands of the respective drums. j

In the operation, it will be seen that when pipe 26 to actuate thepiston 14 for the right and friction band to hold the correspondinginternal gear stationary and cause rotation of the drum 5. At the sametime the cylinder for the left hand drum will be vented to theatmosphere as by the vent passage 28, thus allowing the left handinternal gear to be freely rotated; and consequently the drum 6 will notbe driven. By turning the valve part 24 180, it will be seen that thepipe 27 will be placed in communication with the inlet pipe 22 andthereb pressure fluid to the left and cylinder 13, to cause operation ofdrum 6 while drum 5 is now free.

In Fig. 4 I have shown a modified form of the control valve comprising acasing 29 with a usual rotatable central member 30 having a central livepressure fluid inlet passage 31 adapted to communicate with the passage21 leading to the motor as by a peripheral groove 32. When the member 30is in the position shownin Fig. 4, the passage 26 leading to thecylinder for actuating the right hand friction control band will be incommunication with the source of live pressure fluid through the passage31, while the passage 27 leading to the cylinder for the left hand drumwill be vented to the atmosphere as by a passage 33 and a peripheralgroove 34. When the valve is turned 90 degrees from its presentposition, live fluid will continuously flow to the motor but the passage26 will bel brought into communication with the passage 33 as by thegroove 34 thus releasing the right hand drum and allowing fiow of livepressure fluid from the passage 31 to the cylinder for the left handdrum as through the peripheral groove 32 and passa e 27.

In the mo ified form shown in Fig. 5, the motive power comprises anelectric motor and a suitable switch is used whereby when thrown in onedirection, current will flow to energize a solenoid 35 corresponding toone of the cylinders 13. A usual plunger 36 cooperates with the solenoidto actuate the friction bands as in .the first ease. When the switch isthrown in the opposite direction,-a second-solenoid which is providedfor the other friction band will of course be actuated.

While I have in this application specifically described three formswhich my invention may assume in practice, it will be understood thatthese forms of the same are shown for purposes of illustration and thatthe invention may be modified and embodied in various other formswithout departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. A haulage mechanism comprising a motor, a plurality of winding drumsrotatable independently of said motor, driving conallow the fiow ofnections between the motor and said drums operative to effect rotationin the same direction of each drum without reversal of the motor, saiddriving connections comprising power transmission connections with themotor individual to each drum and each comprising means for selectivelyrendering it effective or interrupting power transmission thereby to itsrespective drum, controlling mechanism individual to each of said lastmentioned means operative on supply of actuating medium thereto toactuate its controlled means to effect drum drive, and means forcontrolling said motor and said controlling mechanisms operative tosupply actuating medium to the motor, and to one or another of saidcontrolling mechanisms separately only when actuating medium is flowingto the motor, and having a single controlling member movable todifferent positions to effect control of said different controllingmechanisms.

2. In a haulage mechanism, a motor operative on supply of motive mediumthereto, a plurality of rotatable Winding drums, means associated witheach drum for transmitting power from said motor thereto separately tocause driving thereof, said means each including power transmissioncontrolling devices controllable either to effect transmission ofrotation from the motor to its respective drum or to release the drumfrom driving connection with the motor thereby to permit free rotationthereof, operating mechanisms for said power transmission controllingdevices operable by the same kind of motive medium as said motor, andcontrolling means for said motor and for said operating mechanismsincluding an operator controlled element movable to different positionsto effect the rotation of different drums and controlling means governedby said operating element and in each of said positions of the lattereffecting motive medium supply to the motor and to one powertransmission controlling device operating mechanism.

3. ln a haulage mechanism, a motor operative on supply of motive mediumthereto, a plurality of rotatable winding drums, means associated witheach drum for transmitting power from said motor thereto separately tocause driving thereof, said means each including power transmissioncontrolling devices controllable either to effect transmission ofrotation from the motor to its respective drum or to release the drumfrom driving connection with the motor, thereby to'permit free rotationthereof, operating mechanisms for said power transmission controllingdevices operable by the same kind of motive niedium as said motor, and acommon controlling mechanism for said motor and for said operatingmechanisms including a control element movable to different positions ineach of which it effects motive medium supply to th(l Isupply to anotherpower transmissionicon.-

trolling device operating mechanism.

4. In a haulage mechanism, a motor operative on supply .of motive mediumthereto, a plurality of rotatable-winding drums, means associated witheach drum for transmitting power from said motor thereto separately tocause driving thereof, said means each including power transmissioncontrollin devices controllable either to eiect transmission of rotationfrom the motor to its res ctive drum or to release the drum from ivingconnection with'the motor, thereby to permit free rotation thereof,operating mechanisms for said power transmission controlling devlcesoperable by thesame kind of motive -inedium as said motor, and a commoncontrolling mechanism for said motor and for said o erating'mechanismsincluding a inem- 1 ber a apted to be placed in and between differentpositions in one of which it effects motive medium supply to one of saidpower transmission controlling.V device operatin f mechanisms and in theother of which it e fects motive medium supply to thel other of saidpower transmission controlling tor, a plurality of independently twinding drums, means provide device operating mechanisms, andin both ofwhich, and also in intermediate positions, it eiects supply of motivemedium to said motor.

5. A haulage mechanism comprising a morotatable for each drum adapted toconstitute driving connections between the respective drum and themotor, said means each including a frictionally controlled reactionmember, means for controllin ow of ener medium to said motor, an means`contro ed by said motor control meansfor Iselectively actuating saidfriction controls for said reaction members to elfect driving of one oranother of said drums said motor and said actuatin means for saifriction controls being supphed from a common source with actuatingmedium, said a'ctuating means for said friction controls being connectedto be energized only when ener medium is owing tothe motor.

(tgl haula e mechanism comprising a motor, a plura 'ty of `inde ndentlyrotatable winding drums, `means or electing drive of each drum withoutmotor reversal including means individual to each drum adapted toconstitute driving connections between the respective drum and the motorduring rotation of the latter in the same direction, driving connectionscontrol means for bringing one of said driving connections intooperation at a time when supplied-with power medium, and common controlmeans for the supplies of actuating medium to the motor and to saidconnections control means, said common control means controlling'ithesupply of actuating medium to said 7. -In a hoist, a fluid actuatedmotor, a airl of relatively rotatable winding drums, riving connectionsbetween said motor and each of said drums, fluid actuated drive controlmeans for each of said driving connections, l

and a common valve for controlling Huid llow to said motor andselectively to each of said' drive control means.

8. In a hoist, a fluid actuated motor, a pair of relatively rotatablewinding drums, drivingv connections between said motor and each of saiddrums, iuid actuated drive control means for each of said drivingconnections, and a common valve for controlling fluid How to said motorand selectively to each of said drive controlmeans, said valve havinprovision for connecting the source of ui with but one drive controlmeans at a time.

9. In a hoist,.a unidirectional motor, a pair of relatively rotatablewinding drums, driving connections between said motor and said dru`mspermittin the latter, control g means for said motor, and control meansfor said driving connections for permitting selective drive of eitherdrum alone directl controlled by said motor control means, sai motorcontrolling means having one operative osition in which but one of saiddrums may said drums ma be driven.

`10. In a hoist, a fluid pressure operated" medium from a common sourcewith sai motor, and a single manually operable member for controllingthe supply of actuating 'medium to said motor and tosaidexpansiblechambers, said manually operable member being movable todirect actuating medium to either of said expansible chamber selectivel11. In a hoist, a motor, a pair of relative y rotatable winding drums,driving connections Vbetween said motor and said drums permittinindependent driving of the latter, contro means for said motor includina movab e member, and controlling means or slid driving connections forrmittin selective drive of either drum one, sai latter controlli meansbeing directly connected to said mova le member so as to be directlycontrollnd thereby.

independent driving of driven and another operative position in whichonly the other of v 12. In a hoist, a motor, a pair of relativelyrotatable winding drums, driving connections between said motor and saiddrums forselectively connecting the latter independently of each otherfor driving by said motor, controllin means for the motor, and meanscontro ed by the motor controlling means and actuated independently ofthe motion of the motor for controlling said drivin connec tions toeffect selectively indepen ent drive olf]L one drum or of the other inaccordance with t e trollmg means.

In testimony whereof I affix my si ature.

CHARLES F. OSG OD.

articular operation'of said motor con--

